<?php

class UserController extends Controller
{
	const USER_ACTIVE = 1;
	const USER_INACTIVE = 0;
	
	/**
	 * @var string the default layout for the views. Defaults to '//layouts/column2', meaning
	 * using two-column layout. See 'protected/views/layouts/column2.php'.
	 */
	public $layout='//layouts/column2';
	
	public $defaultAction = 'admin';

	/**
	 * @return array action filters
	 */
	public function filters()
	{
		return array(
			'accessControl', // perform access control for CRUD operations
		);
	}

	/**
	 * Specifies the access control rules.
	 * This method is used by the 'accessControl' filter.
	 * @return array access control rules
	 */
	public function accessRules()
	{
		return array(
			array('allow',  // allow all users to perform 'index' and 'view' actions
				'actions'=>array('index','view','create','update','admin','delete','changeUserPassword'),
				'roles'=>array('manager'),
			),
			array('allow',  // allow any user change his owne password
					'actions'=>array('changePassword'),
					'users'=>array('@'),
			),
			array('deny',  // deny all users
				'users'=>array('*'),
			),
		);
	}

	/**
	 * Displays a particular model.
	 * @param integer $id the ID of the model to be displayed
	 */
	public function actionView($id)
	{
		$this->render('view',array(
			'model'=>$this->loadModel($id),
		));
	}

	/**
	 * Creates a new model.
	 * If creation is successful, the browser will be redirected to the 'view' page.
	 */
	public function actionCreate()
	{
		$model=new User;

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['User']))
		{
			$model->attributes=$_POST['User'];
			$model->active = self::USER_ACTIVE;
			$model->password = Yii::app()->user->digest($model->password, $model->username);
			if($model->save())
				$this->redirect(array('view','id'=>$model->id));
			else // if validation is false, reset the password.
				$model->password = null;
		}

		$this->render('create',array(
			'model'=>$model,
		));
	}

	/**
	 * Updates a particular model.
	 * If update is successful, the browser will be redirected to the 'view' page.
	 * @param integer $id the ID of the model to be updated
	 */
	public function actionUpdate($id)
	{
		
		$model=$this->loadModel($id);

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['User']))
		{
			$model->attributes=$_POST['User'];
			if($model->save())
				$this->redirect(array('view','id'=>$model->id));
		}

		$this->render('update',array(
			'model'=>$model,
		));
	}

	/**
	 * Deletes a particular model.
	 * If deletion is successful, the browser will be redirected to the 'admin' page.
	 * @param integer $id the ID of the model to be deleted
	 */
	public function actionDelete($id)
	{
		if(Yii::app()->request->isPostRequest)
		{
			if ($id==Yii::app()->user->id) {
				// Avoid admin delete himself.
				throw new CHttpException(400,'Invalid request. Please Do Not Kill Yourself.');
			}
			// we only allow deletion via POST request
			$this->loadModel($id)->delete();

			// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
			//if(!isset($_GET['ajax']))
				//$this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
		}
		else
			throw new CHttpException(400,'Invalid request. Please do not repeat this request again.');
	}

	/**
	 * Lists all models.
	 */
	public function actionIndex()
	{
		$dataProvider=new CActiveDataProvider('User');
		$this->render('index',array(
			'dataProvider'=>$dataProvider,
		));
	}

	/**
	 * Manages all models.
	 */
	public function actionAdmin()
	{
		$model=new User('search');
		$model->unsetAttributes();  // clear any default values
		if(isset($_GET['User']))
			$model->attributes=$_GET['User'];

		$this->render('admin',array(
			'model'=>$model,
		));
	}

	/**
	 * Returns the data model based on the primary key given in the GET variable.
	 * If the data model is not found, an HTTP exception will be raised.
	 * @param integer the ID of the model to be loaded
	 * @return User
	 */
	public function loadModel($id)
	{
		$model=User::model()->findByPk($id);
		if($model===null)
			throw new CHttpException(404,'The requested page does not exist.');
		return $model;
	}

	/**
	 * Performs the AJAX validation.
	 * @param CModel the model to be validated
	 */
/*	protected function performAjaxValidation($model)
	{
		if(isset($_POST['ajax']) && $_POST['ajax']==='user-form')
		{
			echo CActiveForm::validate($model);
			Yii::app()->end();
		}
	}
*/	
	
	/**
	 * User changes his own password.
	 */
	public function actionChangePassword()
	{
		$model=new ChangePasswordForm();
		
	    if(isset($_POST['ChangePasswordForm']))
	    {
	        $model->attributes=$_POST['ChangePasswordForm'];
	        if($model->validate())
	        {
	            // form inputs are valid, then update user's password in database.
	            $user=$this->loadModel(Yii::app()->user->id);
	            $user->password=Yii::app()->user->digest($model->newPassword, $user->username);
	            
	            if($user->save())	        
					$this->redirect(array('site/index'));
	        }
	    }
	    $this->render('changePassword',array('model'=>$model));
	}
	
	
	/**
	 * Admin changes user's password (excpet hisselfs)
	 * @param int $id
	 */
	public function actionChangeUserPassword($id)
	{
		$model=$this->loadModel($id);

		if(isset($_POST['User']))
		{
			$model->attributes=$_POST['User'];
			$model->password=Yii::app()->user->digest($model->password, $model->username);
			if($model->save())
				$this->redirect(array('update','id'=>$id));
		}

		$model->password='';//do not need to display old password.
		$this->render('changeUserPassword',array(
			'model'=>$model,
		));
	}
}
